Rotary valve for engines



(No Model.) 2 SheetsSheet l.

P. N. DELLINGER. ROTARY VALVE FOB. ENGINES.

No. 436,699. Patented Sept. 16. 1890.

(No Model.) 2 Sheets-Sheet 2.

P. N. DELLINGER. ROTARY VALVE FOR ENGINES.

No. 486,699. Patented Sept. 16, 1890.

Witnesses: I fnvento r: 070.10%

UNITED STATES PATENT OFFICE.

PERRY N. DELLINGER, OF VVHATCOM, \VASHINGTON.

ROTARY VALVE FOR ENGINES.

SPECIFICATION forming part of Letters Patent No. 436,699, dated September 16, 1890.

Application filed June 25, 1890. Serial No. 356,612. (No model.)

State of lVashington, have invented certain new and useful Improvements in Rotary Valves for Steam-Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in rotary valves for steam-engines; and it consists in the combination and arrangement of parts which will be fully described hereinafter.

The objects of myinvention are to connect the governor either directly or indirectly to a pinion which operates a fiat partially-revolving valve, which controls the size of the ports, and by means of which the ordinary ball-governor is made automatic in its action, and to produce a cheap and simple valve-gear which is not likely to get out of order.

Figure 1 is a longitudinal vertical section of a valve mechanism to which my invention is applied. Fig. 2 is a similar view taken at right angles to Fig. 1. Fig. 3 is a plan view of the fiat valve, a portion of the casing being broken away so as to show the operating part-s connected with the pinion. Fig. 4 is a plan view of the rotating valve. Fig. 5 is an inverted view of the same. Fig. 6 is a detached vlew.

A represents the upper portion of the cylinder through which the inlet-ports B and exhaust-port C are made. Upon the top of this cylinder is formed or secured the raised ring .0, which entirely surrounds the two inletports, and inside of which the flat partiallyrotating valve D is placed, and which valve is made slightly thinner than the ring so as to allow it to be freely operated by the governor. Through or in the under side of this flat valve D are formed the teeth or cogs, with which the pinion F engages for the purpose of partially rotating the valve for the purpose of controlling the size of the inlet-ports, and thus regulating with the utmost precision the amount of steam that should be admitted to the cylinder. The distance that this valveD shall be moved is controlled by the stops G, which extend inward from the ring 0, and against which stops the ends of the valve rest when it is in its normal position. In proportion as the valve D is caused to move by the governor the ends of the valves close over the inlet-ports B, so as to decrease them in size and thus lessen the amount of steam which passes into the cylinder. hen this valve D is in its normal'position, the size of the ports is not interfered with in any respect; and hence the full quantity of steam supplied from the boiler is fed into the cylinder.

At one side of one of the inlet-passages is formed a chamber, and in this chamber is journaled the pinion F, which has its teeth to project up through the bottom of the valvechest and engage with the teeth of the valve D for the purpose of operating it. The shaft I of this pinion projects through the side of the top of the cylinder. ApointerJ is secured thereto, and this pointer indicates the posi tion of the valve D in all of its movements.

If the valve is placed upon the side of the cylinder, as here shown, the pinion F is provided with a wrist-pin to which the connecting-rod L is attached. The other end of this wrist-pin is provided with teeth or cogs to engage with the segment N. f The shaft of this segment extends vertically, and attached to a pin which projects from one side of this segment N is the endwise-moving rod 0, to which the governor is attached. The slightest movement of the governor is transferred through the segment N and pinion F to the valve D for the purpose of opening or closing the inletports. Through the center of this valve D is formed the opening P, through which the dead steam passes to the exhaust-port O. Placed upon the top of this flat valve D is the rotating valve R, which is centered by means of its shaft S, which has its lower end placed in a suitable bearing upon the top of the cylinder, and which has its upper end centered by a stuffing-box in the top of the steam-chest T, and to the outer end of which shaft is secured the pinion U, through which power is applied to the valve for the purpose ofrotating it. The top of this rotary valve is provided with two shoulders V, and placed upon the flat portion of the valve is the adjustable ICO - plate W, by means of which the port X can be increased or decreased in size at the will of the engineer. In the under side of this rotary valve is formed a chamber X, which is made, preferably, of the form here shown, and into which the dead steam escapes for the purpose of being conducted to the escape-port at the same time that live steam is being admitted through the other inlet-port.

The valve-chest will be suitably packed so as to form a tight joint to prevent leakage at any point.

I do not limit myself to any details of construction, such as the location of the chest or the packings used, for these may be varied without departing from the spirit of my invention.

Having thus described my invention, I claim- 1. The combination of the flat partially-rotating valve D, the ring 0', inside of which it is placed, the pinion for moving the valve, a governor for operating the pinion and moving the valve, the rotary valve provided with a port through one edge,achamber in its under side, an operating-shaft, and the pinion se-' cured thereto, substantially as described.

2. The combination of the cylinder provided with inlet and outlet ports, the fiat partiallyrotating valve provided with teeth or cogs, a pinion for moving the valve, a toothed rod connected to the pinion, a segment operated by the rod, and a rod connected to the pinion and to which the governor is attached, substantially as set forth.

In testimony whereof I afiixmysignaturein presence of two witnesses.

PERRY N. DELLIN GER. Witnesses:

THOMAS J. BURKE, CHRIST EVERSEN. 

